Filter.



PATENTED FEB. 20, 1906. B. P. SCHIRMER. FILTER.

APPI IOATION FILED MAB.21, 1904,

JB'ALDWIN F. SOHIRMER, F CLEVELAND, OHIO.

FILTER...

Specification of Letters Patent.

Application filed March 21, I904. serial No. 199,175- 7 Patented FbQZl), 1806.

I To all whom it may concern:

Be it known that I, BALDWIN F. SCHIRMER, a citizen of the United States, and a resident of Cleveland, county of Cuyahoga, State of Ohio, have invented certain new and useful Improvements in Filters, of which I hereby declare the following to be a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make andause the same.

The objects of the invention are to provide a constant, natural, and continuously downward flow of the fluid undergoing treatment in the filter (largely obtaine by gravity) by which means malt fluids and beer or other i, fluids containing carbonic-acid gas. will not become separated or disrupted from the gas,

which if permitted will rise to the 'top of the,

' filter, thus causing the fluid to foam and collecting-chamber.

make the filter inoperative by disturbing and affecting the action of the fluid.

A further object is to increase the effectual filtering area and the area of distributionand discharge, thereb increasing the flow materially without re ucing the utility of action of the filter.

Afurther object is to provide a separate chamber for primary filtration, whereby the coarser refuse and undesirable suspended matter can be collected previously to the introduction of-the fluid to the ,final action of the filter. This chamber is also accessible for cleaning at any time withoutdisturbing the main or more permanent ortion of the' filter and is also provided wit a filter mass I of less-density than'that in the main portion or the filter and therefore more easily cleansed. I accomplish these objects by means of the vertical casing in which are disposed vertical partitions provided with vertical and lateral passages, the partitions bein separated by spaces containing tightly-pac ed filter mass and arranged alternatelly, touching the top and bottom perforatedp ates. A perforated 'tube admits the fluid to the central space and is inelosed in thefilter' mass, and the device is completed by means of a sloping bottom or The device further comprises plates separatin the first and fina filteringchambers, a e orated plate upon the upper chamber, an a similar plate underneath the lower chamber, a device for compressing the filter mass in the upper chamber, and valves erforated bination and arrangement of theyenrious parts and construction of details, as herein after described, shown in the accompanying drawings, and specifically pointed out in the claims. 7

In the accompanying drawings, Figure 1 is an exterior view of the device. Fig. 2 is a vertical central section thereof. Fig. 3 is a quarter-section, on an enlarged scale, taken horizontally through the lower portion of the filter. 4 is a plan view of upper chamher with cover removed, and Fig. 5 is a mo dified form of construction of one ofthe partitions. Fi 6 shows the adjacent plates'diagonally uted in difierent directions, thus preventing the plates from coming into contact over their, entire area. Fl 7 is a small broken section of bottom of ter, showing the central tube resting upon the bottom perforated plate.

In the views, Iis the filter-casing, which for convenience in handling is mounted upon trunnions 2, pivoted upon bearings upon a movable truck 4. (Shownpartly'broken away in Fig. 1.) A cover 5 is removably secured upon the casing.- Thelower portion of the casing is curved or sloped at 6 to permitthe fluid town to the central discharge-opening 7, The filter mass 8 rests upon-the perforated plate 9. A'similar perforated plate 10 forms the upper wall of the mainfilter-chamber. The

partitions 11 are shorter than the height of the chamber and alternately restupon the bottom-plate 9 or engage the upper plate 10. All space between the partitions and between the artitions and the plates 9 and 10 are fille with tightly-packed filter mass. The.

central space is rovided with a tube 12, ta-

pered downward y,ifpreferred,which engages the upper plate, or if the partitions alternate and-wheel .17, t e nut being formed in the plate 14 and is o erated by a screw 16 and.

cover 5. The upper chamber 18 is accessible I for cleaning at any time and is employed as 'a protection for the lower chamber, since the partitions and tightly packed filter mass therein are not so accessible for cleansing and if the fluid is partially filtered before entering the lower chamber it will not be necessary to cleanse this portion of the device nearly as often as if the preliminary filter were not employed.

The filter mass in the upper chamber is loosely packed, and any required pressure thereon can be obtained by means of the screw-press. At is seen the inletvalve.

A light sieve of tinned copper 19 is preferably placed upon the lower perforated plate 9 to prevent the filter mass or its fine fibers from passing through.

The partitions are shown in Fig. 3 to be composed of corrugated plates of tinned cop per so placed that the opposing corrugations alternately recede from one another and alternately touch,- thus forming vertical passages. The lateral perforations permit free passage of the fluid, and a constant current is thus provided through the filtering material from the discharging-passages to the receiving-passages, and thus through the bottom perforated plate.

The exact construction of the partitions can be variedas, for instance, they might be formed of corrugated netting and a vertical screen of netting attached thereto on either side, as shown in Fig. 5, or the corrugations can be diagonal, and thus there will be no danger of closing the passages when the plates touch one another, as in Fig. 6. The exact construction of all details could be changed in shape or proportion, and it is possible to arrange the partitions in other figures instead of circular, or other changes obvious to a skilled mechanic could be made without departing from the spiritof the invention.

Furthermore, the filter could be used in ahorizontal position, if necessary, as well as in a vertical position, or a complete filter could be constructed from the secondary chamber alone without the use of the primary cham ber. i

. Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A filte'r, comprising, in combination, a main filter-chamber, vertical partitions therein provided with longitudinal and lateral openings, a perforated plate formingthe top of the chamber, a perforated plate forming the bottom of the chamber, with which top and bottom plates the partitions alternately engage, a primary filtering-chamber mounted upon themain chamber, and communicating therewith through said top perforated plate, a common caslng for both chambers, an inlet-passage leading to the primary chamber, an outlet-passage leading from the main chamber and a filter in each chamber, substantially as described.

2. A filter comprising, an external casing, and upper primary and lower secondaryfilterchambers therein, perforated plates forming end plates for said chambers, a perforated plate separating said chambers, a pressure device for the primary chamber, vertical partitions in said secondary chamber alternately engaging the perforated plates which inclose said chamber and provided with vertical and lateral passages, a central perforated tube, engaging the upper perforated plate of the lower chamber, loosely-packed filter mass in the primary chamber, and tightly-packed filter mass in the secondary chamber, separating the partitions from each other and from the perforated plates at .alternate ends, substantially as described.

3. The combination in a filter, of a casing, a cover therefor, a bottom sloping to an outlet-passage, a perforated plate in said bottom, a tightly-packed filter mass upon said perforated bottom plate, a perforated top plate upon the filter mass, vertical artitions concentrically arranged in said ter mass and alternately engaging said top and bot-- tom plates, the said partitions being laterally perforated, a filter mass upon the said top plate, a perforated plate thereon, and a pressure device for said last-mentioned perforated plate consisting of'a pressureplate resting thereon and a screw passing through the said cover for the casing, substantially as described.

4. The combination with a casing, and perforated top and bottom plates of a filter, of a filter mass tightly compressed between said plates, and vertical concentric partitions, in said mass, provided with vertical and lateral passages, the said partitions alternately en gaging the said perforated plates, and alternately separated therefrom, substantially a described. I

5.- In a filter, the combination with a casing, of a filter-mass chamber therein, perforated plates forming the top and bottom thereof, and partitions therein comprising concentrically-arranged vertical plates, each 1 partition comprising oppositely-corrugated plates in close juxtaposition, the opposing corrugations of said plates alternately touching and alternately forming vertical passages, lateral openings in both of said corrugated plates, and the said partitions so disposed alternately engaging the top and bottom plates, and alternately out of contact there with, and a filter mass, separating said partitions from one another, and alternately separating said partitions from the to and bottom plates, substantially as descri ed.

6. A filter, comprising in combination, a main filter-chamber, vertical partitions therein, provided with vertical and lateral openings, a perforated plate forming one end of the chamber, a perforated plate forming the other end of the chamber, With which plates the partitions alternately engage, a primary filtering-chamber mounted upon the main chamber and communicating therewith through the separating perforated late at that end, a common casing for hot ,chanihers, an inlet passage leading to the primary filter-chamber, an outlet-passage leading from the main chamber, filter mass filling each chamber, and a pressure device for the primary filter-chamber, substantially as described.

In testiniony whereof I hereunto set my hand this 18th day of March, 1904.

BALDWIN F. SOHIRMER.

Witnesses:

WM. M. MONROE, Geo. S. COLE. 

